Hand pump



FIG. 1 is a front elevation of a hand pump showing my new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation thereof with a portion of the hose shown deleted for clarity of illustration;

FIG. 5 is a left side elevation thereof with the hose shown deleted for clarity of illustration;

FIG. 6 is a rear elevation of FIG. 4; and

FIG. 7 is an opposite side elevation of FIG. 5. 

The ornamental design for a hand pump, as shown and described. 